Guano: A Treatise of Practical Information for Farmers

An earnest guide for mid‑19th‑century farmers, this treatise explains why Peruvian guano quickly became America’s most prized manure. Drawing on the author’s travels and observations, it outlines the mineral makeup of the seabird droppings—rich in nitrogen, phosphoric and potash acids, lime and magnesia—and shows how those nutrients match the needs of wheat, corn, clover and other staple crops. It also offers a concise history of guano’s discovery, its sources, and practical tips for purchasing genuine material while avoiding cheap counterfeits.

Beyond the science, the work provides straightforward, step‑by‑step directions for applying guano to a variety of soils and climates, emphasizing its cost‑effectiveness for farms with limited transport options. Readers will find tables on proper dosages, advice on rotating legumes and grains, and encouragement to keep records of experiments for future improvement. The tone is practical and supportive, aiming to help any diligent farmer increase soil fertility and reap reliable returns from this remarkable natural fertilizer.